Re: [Xen-users] Help me to set up network (routes)

[Simon Hobson <linux@xxxxxxxxxxxxxxxx>]

I haven't used Xen in routed mode, but I can make a few observations 
based on simple IP networking rules.
AlannY wrote:

> Dom0 have one (1) working net card: eth0
>
> with IP for external LAN: 10.9.3.92
> and gateway for with IP: 10.9.3.1
And what IP address have you assigned it for the inside network ?


> In my DomU (Windows in my case) I set up network interface as follow:
>
> address 10.0.2.2
> netmask 255.255.255.0
> gateway 10.9.3.1  # it's a gateway which gave me ISP (see above)
NO, the gateway MUST be an IP address on it's own network - ie it 
MUST be 10.0.2.<something>. In this case, it should the be the 
internal IP address you assigned to Dom0. Because the gateway isn't 
on it's own network, the guest doesn't even know how to reach the 
gateway - if you see what I mean.
> %# ifconfig -a
> eth0      Link encap:Ethernet  HWaddr 00:e0:4c:a0:b0:20
>           inet addr:10.9.3.92  Bcast:10.9.3.255  Mask:255.255.255.0
>           inet6 addr: fe80::2e0:4cff:fea0:b020/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:2158921 errors:1 dropped:78 overruns:1 frame:0
>           TX packets:1918655 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:2215803222 (2.0 GiB)  TX bytes:1294017960 (1.2 GiB)
>           Interrupt:17 Base address:0xd000
> [...]
> tap2.0    Link encap:Ethernet  HWaddr 4e:69:00:fd:f0:48
>           inet6 addr: fe80::4c69:ff:fefd:f048/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:26 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:500
>           RX bytes:2343 (2.2 KiB)  TX bytes:468 (468.0 B)
>
> vif2.0    Link encap:Ethernet  HWaddr fe:ff:ff:ff:ff:ff
>           inet addr:10.9.3.92  Bcast:10.255.255.255  Mask:255.255.255.255
This will need to be i the 10.0.2.x subnet

--
Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
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